7T1E

Structure of monomeric and dimeric human CCL20

• PDB DOI: https://doi.org/10.2210/pdb7T1E/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-12-01 Released: 2022-12-14 
• Deposition Author(s): Peterson, F.C., Riutta, S.J., Volkman, B.F.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID), National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.46 Å
• R-Value Free: 0.173 
• R-Value Work: 0.163 
• R-Value Observed: 0.163 

Literature

CCL20 and CCR6 in the pathogenesis and treatment of psoriasis and psoriatic arthritis

Shi, Z., Mabuchi, T., Riutta, S.J., Peterson, F.C., Volkman, B.F., Hwang, S.T.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 41.54 kDa 
• Atom Count: 3,260 
• Modelled Residue Count: 333 
• Deposited Residue Count: 350 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
C-C motif chemokine 20	A, B, C, D, E	70	Homo sapiens	Mutation(s): 0  Gene Names: CCL20, LARC, MIP3A, SCYA20
UniProt & NIH Common Fund Data Resources
Find proteins for P78556 (Homo sapiens) Explore P78556  Go to UniProtKB:  P78556
PHAROS:  P78556 GTEx:  ENSG00000115009

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SIN	I [auth B], J [auth B], O [auth E]	SUCCINIC ACID C4 H6 O4 KDYFGRWQOYBRFD-UHFFFAOYSA-N
PEG	K [auth B], N [auth D], R [auth E]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
GOL	F [auth A], G [auth A], H [auth A], L [auth D], M [auth D], P [auth E], Q [auth E]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.46 Å
• R-Value Free: 0.173 
• R-Value Work: 0.163 
• R-Value Observed: 0.163 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.203	α = 90
b = 60.203	β = 90
c = 231.268	γ = 120

Software Package:

Software Name	Purpose
XDS	data reduction
Aimless	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-12-14 
Deposition Author(s): Peterson, F.C., Riutta, S.J., Volkman, B.F.

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI050872
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)	United States	AR063091

Revision History  

• Version 1.0: 2022-12-14
  Type: Initial release
  
• Version 1.1: 2023-10-25
  Changes: Data collection, Refinement description